[MAPREDUCE-2592] TT should fail task immediately if userlog dir cannot be created

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Affects Version/s: 0.22.0
• Component/s: tasktracker
• Assignee: Harsh J
• Reporter: Todd Lipcon
• Created: 14/Jun/11 18:33
• Updated: 11/Feb/12 17:51
• Resolved: 11/Feb/12 17:51

Description

Currently, TaskRunner will log the message "mkdirs failed. Ignoring" if it fails to mkdir the userlog directory for a task. Then, it goes on to spawn taskjvm.sh which tries to redirect output into the userlogs dir, thus failing with exit code 1. This leads to error messages that are very hard to diagnose ("task failed with exit status 1") in cases where the userlog directory has either become inaccessible or has reached the maximum number of dirents (32000 in ext3)